pocketbook

noun5

1. •
   (US) A purse or handbag.
2. •
   (old-fashioned) A wallet for paper money.
3. •
   (figurative) One's personal budget or financial capacity; the amount one can afford.
4. •
   A small book, particularly (US) a paperback or (UK) notebook able to fit into a pocket (of any genre, from reference work to fine art).

   • The publishers brought out small format pocketbooks of the whole of their nature series.
5. •
   (Philippines) A romance novel published as a small paperback.